Soil pulverizer



0ct.4,1949. LE R. HART 2,483,767

SOIL PULVERIZER Filed April 20, 1945 4 Shee'ts-Shet 1 Inventor -ct.4,1949. RQLE RHART v 2,483,767

son. iULVERIZER Filed April 20, 1945 4 Sheets-Shem; 2

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Attorneys at. 4, 1949. R. LE R. HART I 2,483,767

SOIL PULVERIZER Filed April 20, 1945 4 Sheets-Sheet 4 fJO.

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ttorneys Patented Oct. 4, 1949 sTaT-as ear orgies somrmvnarznn I Riobertlie Roy Hart, Smith-field, .N. 0.

Application Aprili20, 1945, Serial No. 589,340

This invention relates to agricultural implements and has for anobject' to provide a machine with which tillable landmay be quickly and thoroughly pulverized;

Another object of the invention is to provide a machine havingarotorsprovidediwitlr.a series of peripheral blades. Adurtherobject of the invention is to provide a soilipulve'rizing machinecomprising a series. of rotors arranged in stepped-relation andhav ing a series of'spaced' and inclinedper ipheral. blades for chopping into the soil;

Other; features and advantages will ,become more readily apparent from the following description and the accompanyingillustrative drawings inwhich:

Figure lis a top plan view ofmy machine,

Figure 2 is a side elevation thereof,

Figure 3 is a front elevational view of the device,

Figure 4 is a sectional view taken on line 4-4 of Figure 2, and

Figure 5 is a fragmentary view illustrating a modification.

Like reference characters in the views of the drawings and in the specification indicate like parts. The character l0, designates my machine which includes a tractor H, provided with a motor I2, to the shaft 13, of which is keyed a relatively very large gear l4, meshing with two smaller gears l5 and I6, disposed on opposite sides of the gear l4, all of which gears being enclosed in a housing H. The gears l5 and it, are keyed on stub shafts l8 and I9, respectively, which through universal joints 29 and 2|, are connected to shafts 22 and 23, supported in bearings 24 and 25, carried on brackets 25 and 21, fixed to the side bars 28 and 29, of a frame 30, attached at its inner ends 3| and 32, by hinges 33 and 34, to the forward ends of the chassis frame members 35 and 36.

To the forward ends 31 and 38, of the shafts 22 and 23, are keyed relatively large (in diameter) rotors 39 and 49, around the peripheries GI and 42, of which are a series of spaced apart inclined cutter blades 43 and 44. The shafts 22 and 23, are so spaced apart and of such varying lengths that the said rotors are in stepped relation and overlap one another.

Fixed to the housing 45, of the front axle of the tractor, as at 4B and 41, are the lower ends of the arms 48 and 49, of an inverted U-shaped frame 50, and to the center of the cross head 5|, thereof is secured a pulley wheel 52, over which is threaded a cable 53, one end 54, of which is 2 attachedzto an eyeitmn the center of the front bah-5.5.; of frameiiiii; The other end 53', of the cable; is attached to. a Windlass 57!, onv which-is fizreda'worm' gear 58", driven by a worm 59; on asshaft'ta, vo'peratediby a hand wheel 3 1, whereby-the frame '39, and its attachments may: be raised: out of the way'when not in use or forpassingover obstacles;

From the opposite ends of the member '53; arefixeclat 62, and 635, theupper ends of deending legs SA'and-BS; to the lower ends of which is fixed an elongated s'hoe 56, the rear edge 81 of which curved up; which is slid'able" on the ground and' forms a depth gauge to limit the depth to: which the ground. This shoe also insliding over-the ground surfacem-ashes down stubble, weeds, etc. ahead of the cutting blades, whereby the same is in better position for chopping by the blades.

Attached to the under side of the bearings 24 and 25, are the upper ends 61 and $8, of pivoted arms 69 and T9, to the lower ends of which are attached gradually widening pans H and 12, which are dragged behind the rotors 39 and 49, to lay the dust created thereby.

In Figure 5, I show a slight modification of rotor shaft supports and in which 53 and M, are the side bars of the hinged frame of the machine, to which bars are fixed the ends l5 and 16 of a bow-shaped guard 11, from which depends a hanger 18, to the lower end of which is carried a bearing 18', for the forward end of shaft 19, upon which the rotor 89, is fixed.

From the foregoing it will be seen that the motor I2, drives gear l4, which in turn drives the small gears l5 and It, at great speed and with the shafts l8 and i9, and their rotors turning their blades 43 and M, to cut into the ground in very rapid succession, breaking the same into fine or pulverized condition and thus forming an excellent seed bed. As the combined. width of the two rotors is considerable a very wide swath is cut as the machine passes over the ground, thus with one operation doing the work of a considerable number of plows as well as subsequent disking and harrowing, saving much labor, time and fuel.

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in connection with the drawings. Therefore, a more lengthy description is regarded as unnecessary.

Minor changes in shape, size and rearrangement of details and parts such as some within blades may cut into the the purview of the invention claimed may be resorted to, in actual practice, if desired.

Having now described my invention that which I claim as new and desire to procure by Letters Patent is:

1. A soil pulverizing device comprising a tractor, a frame hingedly secured to the forward end thereof, a plurality of coplanar shafts of varied length, rotors mounted on said shaft and within said frame, gears driven by the motor of said tractor and said shafts rotated by said gears thereby causing the rotation of said rotors, means mounted on said tractor and operatively connected to said frame for raising and lowering said frame, and bafile means extending across said frame for limiting pivotal travel of said frame.

2. A soil pulverizing device comprising a tractor, a frame hingedly secured to the forward end thereof, a plurality of shafts of varied length, rotors mounted at the terminal portions of said shafts, a predetermined rotor having a portion thereof overlapping the next adjacent rotor, gears driven by the motor of said tractor and said shafts rotated by said gears, means mounted on said tractor and operatively connected to said frame for raising and lowering said frame, an arcuate baflie extending across said frame engageable with the ground for limiting pivotal travel of said frame, and baflie means secured to said frame behind said rotors for leveling pulverized soil and for allaying dust.

3. A soil pulverizing device comprising a tractor, a frame hingedly secured thereto, coplanar rotatable means secured to said frame, means for rotating said rotatable means, rotors secured to said rotatable means, one of said rotors positioned behind and partially overlapping the next said shafts, said soil adjacent rotor, a rod secured to said tractor and a winch secured adjacent said rod, a cable secured to said frame, traveling over said rod and secured to said winch for selectively lifting said frame, and baflle means pivoted to said frame behind said rotors.

4. A soil pulverizing device for use on a tractor, a frame, means for pivotally securing said frame to said tractor, coplanar brackets positioned within said frame, shafts journaled in said brackets and substantially parallel to said frame, pivotal means for securing said shafts to said tractor, soil pulverizing means secured to pulverizing means including partially overlapping rotors, arcuate baffle means secured to said frame for limiting the pivotal travel thereof, and baflles pivotally secured to said brackets and extending longitudinally of said shafts.

ROBERT LE ROY HART.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PA'I'EN'I'S 

